Humidifier assembly



July 5, 1932. c. F. WARRXCK HUMIDIFIER ASSEMBLY Filed April 14. 1930 2 Sheets-Sheet l v INVENTOR (lard 6511" Wkrrcd ATTO RN EYrs' July 5, 1932.

C. F. WARRICK HUMIDIFIER ASSEMBLY Filed April 14. 1 2 Sheets-Stwet 2 QWM/M ATTORNEtS Patented July 5, 1932 UNITED STATES.

PATENT OFFICE CHARLES E. WARRIOR, or DETROIT, MICHIGAN, ASSIGNOR To WHITEHEAI) exams COMPANY, OF RIVER ROUGE, MICHIGAN, A CORPORATION OF MICHIGAN HUMIDIFIER ASSEMBLY Application filed April 14,

' This invention relates generally to h'umidi- One of the essential objects of the invention is to provide a system that is independent of heating systems for the home and that is capable of providing the proper humidification for large homes.

Another Object is to provide a system of this type that may be automatically controlled by a humidostat and that is capable of being adjusted so that it is not completely on or E.

A further object is to provide a system that is constructed and arranged in such a way that the installation thereof is standardized.

Another object is to provide a system in which the steam generator is in the form of a boiler having a body composed of only two sections that are constructed and arranged in such a way that the hot flue gases from the burner for the boiler will flow between the sections and completely about a portion of one section and will cause the water in the sections to circulate from one to the other and be thoroughly heated therein.

Another object is to provide the sections of the boiler body with spiral corrugations which enable one part to be screwed within the other to effect assembly thereof and that are spaced apart in such a way when the parts are assembled that all of the hot gases from the burner haveto follow a circuitous path at the outlet at the upper end thereof and will therefore be utilized on route as a heating medium for the water in the sections.

With the above and other objects in view the invention consists of certain novel features of construction, combinations and arrangements of parts that will be hereinafter more fully described and particularly pointed out in the appended claims.

.is a boiler in which water from the float 1930. 7 Serial no. 444,239.

Figure 4 is a top plan view of the outer casting;

Figure is a bottom plan view of the outer casting;

Figure 6 is a bottom plan View of the inner casting.

Referring now to the drawings, 1 isa float chamber adapted to receive water from a suitable source such as a supply pipe 2; 3

chamber 1 is adapted to be converted into steam or water vapor; 4 is a gas burner for the boiler; 5 is a discharge nozzle for the steam; 6 is a conduit for conducting steam from the boiler to the nozzle; 7 is a safety valve on the boiler; 8 is a flue leading from the boiler to a chimney (not shown) and 9 is a pilot light for theburner. 10 is a main gas supply pipe; 11 and 12 respectively are branches leading from the pipe 10 to the burner 4 and pilot light 9; 13 is a magnetic valve controlling the flow of gas through the branch 11 to the burner; 14 is a humidostat for controlling the valve 13; and 15 is a step-down transformer in circuit with 110 volt A. C. conductors 16 and 17 and with the humidostat 14 and valve 13.

In the present instance the body of the boiler 3 is bolted to brackets 18 on a wall 19 and preferably comprises only two castings 20 and 21 respectively arranged one within the other. As shown, the Outer casting 20 has spaced inner and outer walls 22 and 23 and connecting end walls 24 and 25. The outer wall 23 is preferably cylindrical in form and is provided at spaced points thereof with lugs 26 and 27 respectively that receive the bolts (not shown) carried by the brackets 18. r The inner wall 22 has cylindrical portions 28 and 29 at its opposite ends substantia-lly concentric with the cylindrical outer wall 23' and is provided between said cylindrical portions with a spirally corrugated portion 30. The inner wall 22 is also provided at diametrically opposite points at the juncture of the lower cylindrical'portion 29 and intermediate corrugated portion 30 with inwardly extending tubular portions 31 and 32 respectively that connect into opposite sides of a centrally disposed longitudinallyv 100 extending tubular portion 33. The lower end wall 25 is imperforate and has inwardly projecting lugs 34 and 35 to which a supporting plate 36 for the burner 4 is secured, while the upper end wall 24 is provided at diametrically opposite points with enlargements 37 and 38 respectively having circular openings 39 and 40 respectively therein. Thus the inner, outer, and end walls 22, 23, 24 and 25 respectively of the casting 20 provide a chamber for water. The openings 39 and 40 constitute water inlets while the tubular portions 31 and 32 constitute water outlets.

The burner 4 is received inthe outer casting 20 at the lower end thereof below the tubular portion 33 and has a mixing tube 41 extending through the supporting plate 36. Preferably'the inner and outer walls 22 and 23 of the casting 20 are provided adjacent the lower end wall 25 with aligned openings 42 and 43 and are connected about these openings by a transverve web 44 so that a. passageway 45 is provided opposite the burner 4 to enable the latter to be lighted from the outside. Normally this passageway 45 is closed by a plate 46 pivoted on a bolt 47 threadedly engaging the transverse web 44.

The inner casting 21 is adapted to be screwed within the outer casting 20 and for this purpose has a spirally corrugated wall portion 47. However, the construction of this wall portion 47 is such that when the parts are assembled a space or chamber 48 is provided between the wall portions 22 and 47 throughout their length to receive hot gases from the burner 4. Preferably the corrugated wall portion 47 of the inner casting is provided at opposite ends thereof with a restricted tubular portion 49 and an enlarged dome portion 50. As shown, the restricted tubular portion 49 is at the center and rests upon and registers with the upper end of the tubular portion 33 of the outer casting, while the dome portion 50 extends over and rests upon the upper end wall 24 of the outer casting. Preferably the tubular portion 49 is interiorly threaded and is connected to the tubular portion 33 by a bolt 51. As shown, the head 52 of this bolt closes the lower end of the tubular portion 33, while the shank 53 is tubular in form and extends through the upper end of the tubular portion 33 and engages the internal threads of the tubular portion 49. Openings 54 are provided in the tubular shank 53 so that water from the inwardly extending portions 31 and 32 of the outer casting may flow through the shank 53 to the interior of the casting. Suitable gaskets 55 and 56 are provided about the shank 53 between the tubular portions 49 and 33 and between the head 52 and tubular portion 33 to provide a water-tight oint. Thus with this construction the bolt 51 normally provides a passageway for water from the tubular portions 31 and 32 of the outer casting to the interior of the inner casting 21 but also serves to connect the inner casting to the outer casting and to clamp the gaskets 55 and 56 firmly in place to provide water-tight joints at opposite ends of the tubular portion 33.

Preferably the dome portion 50 is secured by bolts 60 to the enlargements 37 and 38 at the upper end of the outer casting and has circular openings 61 and 62 respectively registering with the openings 39 and 40 in said enlargements so that water in the dome portion 50 may flow into the outer casting. A gasket 63 is clamped between the dome 50 and end wall 24 of the outer castingto provide a water-tight joint. The dome 50 is also provided at one side with a vertical flue portion 64 of substantially oval cross section for re ceiving fumes and gases rising in the space 43 between the inner and outer castings, and is provided in its upper wall 65 with an opening 66 that receives the conduit 6 for conducting steam from the dome to the nozzle 5. Preferably the float chamber 1 is bolted to lugs 67 and 68 projecting laterally from the dome portion 50 at one side thereof and is connected by a short tube 69 to the outer wall 23 of the outer casting 20.

In use the float mechanism (not shown) in the chamber 1 controls the supply of water to the outer casting 20. As the water in the boiler is converted into steam or water vapor, the float mechanism permits water to flow through the tube 69 to the outer casting 20. Due to the construction and arrangement of parts the hot gases from the burner 4 pass upwardly about the hollow bolt 51, tubular portions 31 and 32 and in the space 48 between the corrugated wall portions 22 and 47 of the castings and effectively heat the water in the inner and out-er castings. Thus the corrugated portion 47 of the inner casting is entirely surrounded by hot gases from the burner and is hotter than the outer casting.

62, 39, 61 and 40 and descend in the outer.

casting 20. Thus the construction provides a water circulation that insures efliciency.

While it is believed that from the foregoing description the nature and advantages of the invention will be readily apparent, I.

desire to have it understood that I do not limit myself to what is herein shown and described and that such changes may be resorted to when desired as fall within thescope of what is claimed. a I

What I claim as my invention is:

1. A boiler having two sections, one being provided with spaced inner and outer walls and connecting end walls, the inner wall being provided adjacent the lower end wall with an offset portion of tubular formation, the upper end wall having an opening therein, the second section having a tubular portion within the first section in spaced relation to the inner wall thereof and having a connecting dome portion abutting the upper end wall of the first section, the tubular portion of the second section resting upon and in communication with the tubular offset portion aforesaid, and the dome having an opening registering with the opening in the upper end wall of the first section, the construction and arrangement of the registering openings and of the tubular portions aforesaid being such that a fluid supplied to the space between said inner and outer walls may circulate therefrom to and upwardly in the second section and thence to and downwardly in the first section.

2. A boiler having two sections, one being provided with spaced inner and outer walls and connecting end walls, the inner wall being provided adjacent the lower end wall with an offset portion of tubular formation and being corrugated for a portion of its length, the upper end wall having an opening therein, the second section having a corrugated tubular portion within the first section in spaced relation to the corrugated inner wall thereof, and having a dome portion abutting the upper end wall of the first section, the tubular portion of the second section being secured to and in communication with the tubular offset portion aforesaid of the first section, and the dome of the second section having an opening registering with the opening in the upper end wall of the first section, the construction and arrangement of the tubular portions aforesaid and registering openings being such that a fluid supplied to the space between said inner and outer walls may circulate therefrom to and upwardly in the second section and thence to and downwardly in the first section, and the construction and arrangement of the corrugated portions being such that a circuitous passage is provided between the corrugated portions of said sections for flue gases and the like.

3. A boiler comprising two castings, one being tubular and having spaced inner and outer walls and connecting end walls, the inner wall being corrugated for a portion of its length, the other casting having a corrugated portion extending longitudinally of the first casting in spaced relation to the corrugated portion aforesaid and having a dome portion at its upper end resting upon the upper end wall of the first casting, the lower wall of said dome and the upper end wall of said first casting having registering openings, and the inner wall of the first casting being connected to the lower end of the corrugated portion of the second casting Whereby a fluid supplied to the space between the inner and outer walls of the first casting may flow toand ascend in the second casting and may flow therefrom to and descend in the first casting. V

4. A boiler comprising two sections arranged one within the other, one being tubular and having spaced inner and outer walls, the inner wall being provided at approximately diametrically opposite points thereof adjacent its lower end with radially extending tubular portions and a longitudinally extending tubular portion at the inner ends of and in communication with said radially extending tubular portions, the second section having a dome portion resting upon the first section and communicating with the space between the inner and outer walls thereof, the second section also having a tubular portion extending longitudinally of the first section in spaced relation to the inner wall thereof and having a closed lower end provided with an opening in registration with the longitudinally extending tubular portion aforesaid, and a connection between said sections including a bolt having the head thereof clos ing the lower end of the longitudinally extending tubular portion and having a shank extending through the longitudinally extending tubular portion and the opening in the closed lower end of the second section and provided with means through which a fluid may flow fro-1n the radially extending tubular portions to the interior of the second section.

5. A boiler comprising two castings, one being tubular and provided throughout its length with spaced inner and outer walls and connecting end walls, and the other having a tubular portion extending longitudinally of the first casting in spaced relation to the inner wall thereof and having a dome portion at its upper end above and resting upon the upper end wall of the first casting, and fluid connections between the inner wall of the first casting and the lower end of the tubular portion of the second casting, and between the dome portion of the second casting and the upper end of the first casting whereby water supplied to the space between the inner and outer walls of the first casting may flow to and ascend in the tubular portion of the second casting and may flow from the dome portion of the latter, the space between the inner and outer walls of the first casting.

In testimony whereof I afiix my signature.

CHARLES F. WARRICK. 

